The XMP, an eXeptionally Machined Propeller. The XMP is OJ’s fully CNC machined propeller line combines our 75 years of propeller development with the CNC machining process. The XMP propellers are crafted from highly accurate Ni-Bral castings in our foundry and fully machined in our CNC machining centers. The XMP propeller line boasts a new refined design based on our original LEGEND propellers. The highly accurate CNC machining process produces propellers that are accurate and consistent from part to part. A reliable and repeatable performer defines OJ’s XMP PROPELER line. The XMP line offers propellers in both 3 and 4-blades.